Horses playground

The fence for the horses has the shape of a rectangular trapezoid with an area of 400 m2, the base lengths should be 31 m and 19 m. How many meters of boards will they need to fence it if the boards are stacked in 5 rows?

Correct answer:

x =  430 m

Step-by-step explanation:

S=400 m2 a=31 m c=19 m n=5  S=2a+c d  d=a+c2 S=31+192 400=16 m  b=d2+(ac)2=162+(3119)2=20 m  o=a+b+c+d=31+20+19+16=86 m  x=n o=5 86=430 m

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Tips to related online calculators
Pythagorean theorem is the base for the right triangle calculator.
See also our trigonometric triangle calculator.

We encourage you to watch this tutorial video on this math problem: video1   video2

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